[mirror_edk2.git] / EdkCompatibilityPkg / Compatibility / PciCfgOnPciCfg2Thunk / PciCfgOnPciCfg2Thunk.c

/** @file\r
Module produce PciCfgPpi on top of PciCfgPpi2.\r
\r
PIWG's PI specification replaces Inte's EFI Specification 1.10.\r
EFI_PEI_PCI_CFG_PPI defined in Inte's EFI Specification 1.10 is replaced by\r
EFI_PEI_PCI_CFG2_PPI in PI 1.0.\r
This module produces PciCfgPpi on top of PciCfgPpi2. This module is used on platform when both of\r
these two conditions are true:\r
1) Framework module is present that consumes PCI CFG  AND\r
2) PI module is present that produces PCI CFG2 but not PCI CFG\r
\r
The Usage of this module is rare since EDK II module IntelFrameworkModulePkg\Universal\PcatSingleSegmentPciCfgPei\PcatSingleSegmentPciCfgPei.inf\r
that produce PCI CFG2 can also produce PCI CFG by setting Pcd Feature Flag gEfiIntelFrameworkModulePkgTokenSpaceGuid.PcdPciCfgDisable\r
to FALSE.\r
\r
\r
Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>\r
This program and the accompanying materials\r
are licensed and made available under the terms and conditions of the BSD License\r
which accompanies this distribution.  The full text of the license may be found at\r
http://opensource.org/licenses/bsd-license.php\r
\r
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
Module Name:\r
**/\r
\r
#include <PiPei.h>\r
#include <Ppi/PciCfg.h>\r
#include <Ppi/PciCfg2.h>\r
#include <Library/DebugLib.h>\r
\r
//\r
// Function Prototypes\r
//\r
\r
/**\r
  Reads from a given location in the PCI configuration space.\r
\r
  @param  PeiServices                   An indirect pointer to the PEI Services Table published by the PEI Foundation.\r
\r
  @param  This                              Pointer to local data for the interface.\r
\r
  @param  Width                           The width of the access. Enumerated in bytes.\r
                                                   See EFI_PEI_PCI_CFG_PPI_WIDTH above.\r
\r
  @param  Address                       The physical address of the access. The format of\r
                                                  the address is described by EFI_PEI_PCI_CFG_PPI_PCI_ADDRESS.\r
\r
  @param  Buffer                           A pointer to the buffer of data..\r
\r
\r
  @retval EFI_SUCCESS                 The function completed successfully.\r
\r
  @retval EFI_DEVICE_ERROR        There was a problem with the transaction.\r
\r
  @retval EFI_DEVICE_NOT_READY  The device is not capable of supporting the operation at this\r
                                                    time.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
PciCfgRead (\r
  IN EFI_PEI_SERVICES             **PeiServices,\r
  IN EFI_PEI_PCI_CFG_PPI          *This,\r
  IN EFI_PEI_PCI_CFG_PPI_WIDTH    Width,\r
  IN UINT64                       Address,\r
  IN OUT VOID                     *Buffer\r
  );\r
\r
/**\r
  Write to a given location in the PCI configuration space.\r
\r
  @param  PeiServices                   An indirect pointer to the PEI Services Table published by the PEI Foundation.\r
\r
  @param  This                              Pointer to local data for the interface.\r
\r
  @param  Width                            The width of the access. Enumerated in bytes.\r
                                                    See EFI_PEI_PCI_CFG_PPI_WIDTH above.\r
\r
  @param  Address                         The physical address of the access. The format of\r
                                                    the address is described by EFI_PEI_PCI_CFG_PPI_PCI_ADDRESS.\r
\r
  @param  Buffer                            A pointer to the buffer of data..\r
\r
\r
  @retval EFI_SUCCESS                   The function completed successfully.\r
\r
  @retval EFI_DEVICE_ERROR          There was a problem with the transaction.\r
\r
  @retval EFI_DEVICE_NOT_READY  The device is not capable of supporting the operation at this\r
                                                     time.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
PciCfgWrite (\r
  IN EFI_PEI_SERVICES             **PeiServices,\r
  IN EFI_PEI_PCI_CFG_PPI          *This,\r
  IN EFI_PEI_PCI_CFG_PPI_WIDTH    Width,\r
  IN UINT64                       Address,\r
  IN OUT VOID                     *Buffer\r
  );\r
\r
/**\r
  PCI read-modify-write operation.\r
\r
  @param  PeiServices                     An indirect pointer to the PEI Services Table\r
                                                      published by the PEI Foundation.\r
\r
  @param  This                                Pointer to local data for the interface.\r
\r
  @param  Width                             The width of the access. Enumerated in bytes. Type\r
                                                      EFI_PEI_PCI_CFG_PPI_WIDTH is defined in Read().\r
\r
  @param  Address                           The physical address of the access.\r
\r
  @param  SetBits                            Points to value to bitwise-OR with the read configuration value.\r
                                                      The size of the value is determined by Width.\r
\r
  @param  ClearBits                         Points to the value to negate and bitwise-AND with the read configuration value.\r
                                                      The size of the value is determined by Width.\r
\r
\r
  @retval EFI_SUCCESS                   The function completed successfully.\r
\r
  @retval EFI_DEVICE_ERROR          There was a problem with the transaction.\r
\r
  @retval EFI_DEVICE_NOT_READY  The device is not capable of supporting\r
                                                    the operation at this time.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
PciCfgModify (\r
  IN EFI_PEI_SERVICES             **PeiServices,\r
  IN EFI_PEI_PCI_CFG_PPI          *This,\r
  IN EFI_PEI_PCI_CFG_PPI_WIDTH    Width,\r
  IN UINT64                       Address,\r
  IN UINTN                        SetBits,\r
  IN UINTN                        ClearBits\r
  );\r
\r
//\r
// Module globals\r
//\r
EFI_PEI_PCI_CFG_PPI mPciCfgPpi = {\r
  PciCfgRead,\r
  PciCfgWrite,\r
  PciCfgModify,\r
};\r
\r
EFI_PEI_PPI_DESCRIPTOR     mPpiListPciCfg = {\r
  (EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),\r
  &gEfiPciCfgPpiInServiceTableGuid,\r
  &mPciCfgPpi\r
};\r
\r
/**\r
\r
  Standard PEIM entry point.\r
\r
  @param FileHandle   Handle of the file being invoked.\r
  @param PeiServices  General purpose services available to every PEIM.\r
\r
  @retval EFI_SUCCESS The interface could be successfully installed.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
PeimInitializePciCfg (\r
  IN EFI_PEI_FILE_HANDLE     FileHandle,\r
  IN CONST EFI_PEI_SERVICES  **PeiServices\r
  )\r
{\r
  //\r
  // Publish the PciCfgToPciCfg2 Thunk capability to other modules\r
  //\r
  return (*PeiServices)->InstallPpi (PeiServices, &mPpiListPciCfg);\r
}\r
\r
/**\r
  Reads from a given location in the PCI configuration space.\r
\r
  @param  PeiServices                   An indirect pointer to the PEI Services Table published by the PEI Foundation.\r
\r
  @param  This                              Pointer to local data for the interface.\r
\r
  @param  Width                           The width of the access. Enumerated in bytes.\r
                                                   See EFI_PEI_PCI_CFG_PPI_WIDTH above.\r
\r
  @param  Address                       The physical address of the access. The format of\r
                                                  the address is described by EFI_PEI_PCI_CFG_PPI_PCI_ADDRESS.\r
\r
  @param  Buffer                           A pointer to the buffer of data..\r
\r
\r
  @retval EFI_SUCCESS                 The function completed successfully.\r
\r
  @retval EFI_DEVICE_ERROR        There was a problem with the transaction.\r
\r
  @retval EFI_DEVICE_NOT_READY  The device is not capable of supporting the operation at this\r
                                                    time.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
PciCfgRead (\r
  IN EFI_PEI_SERVICES             **PeiServices,\r
  IN EFI_PEI_PCI_CFG_PPI          *This,\r
  IN EFI_PEI_PCI_CFG_PPI_WIDTH    Width,\r
  IN UINT64                       Address,\r
  IN OUT VOID                     *Buffer\r
  )\r
{\r
  EFI_PEI_PCI_CFG2_PPI  *PciCfg2;\r
\r
  PciCfg2 = (*PeiServices)->PciCfg;\r
\r
  return PciCfg2->Read ((CONST EFI_PEI_SERVICES **)PeiServices, PciCfg2, Width, Address, Buffer);\r
}\r
\r
\r
/**\r
  Write to a given location in the PCI configuration space.\r
\r
  @param  PeiServices                   An indirect pointer to the PEI Services Table published by the PEI Foundation.\r
\r
  @param  This                              Pointer to local data for the interface.\r
\r
  @param  Width                            The width of the access. Enumerated in bytes.\r
                                                    See EFI_PEI_PCI_CFG_PPI_WIDTH above.\r
\r
  @param  Address                         The physical address of the access. The format of\r
                                                    the address is described by EFI_PEI_PCI_CFG_PPI_PCI_ADDRESS.\r
\r
  @param  Buffer                            A pointer to the buffer of data..\r
\r
\r
  @retval EFI_SUCCESS                   The function completed successfully.\r
\r
  @retval EFI_DEVICE_ERROR          There was a problem with the transaction.\r
\r
  @retval EFI_DEVICE_NOT_READY  The device is not capable of supporting the operation at this\r
                                                     time.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
PciCfgWrite (\r
  IN EFI_PEI_SERVICES             **PeiServices,\r
  IN EFI_PEI_PCI_CFG_PPI          *This,\r
  IN EFI_PEI_PCI_CFG_PPI_WIDTH    Width,\r
  IN UINT64                       Address,\r
  IN OUT VOID                     *Buffer\r
  )\r
{\r
  EFI_PEI_PCI_CFG2_PPI  *PciCfg2;\r
\r
  PciCfg2 = (*PeiServices)->PciCfg;\r
\r
  return PciCfg2->Write ((CONST EFI_PEI_SERVICES **)PeiServices, PciCfg2, Width, Address, Buffer);\r
}\r
\r
/**\r
  PCI read-modify-write operation.\r
\r
  @param  PeiServices                     An indirect pointer to the PEI Services Table\r
                                                      published by the PEI Foundation.\r
\r
  @param  This                                Pointer to local data for the interface.\r
\r
  @param  Width                             The width of the access. Enumerated in bytes. Type\r
                                                      EFI_PEI_PCI_CFG_PPI_WIDTH is defined in Read().\r
\r
  @param  Address                           The physical address of the access.\r
\r
  @param  SetBits                            Points to value to bitwise-OR with the read configuration value.\r
                                                      The size of the value is determined by Width.\r
\r
  @param  ClearBits                         Points to the value to negate and bitwise-AND with the read configuration value.\r
                                                      The size of the value is determined by Width.\r
\r
\r
  @retval EFI_SUCCESS                   The function completed successfully.\r
\r
  @retval EFI_DEVICE_ERROR          There was a problem with the transaction.\r
\r
  @retval EFI_DEVICE_NOT_READY  The device is not capable of supporting\r
                                                    the operation at this time.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
PciCfgModify (\r
  IN EFI_PEI_SERVICES             **PeiServices,\r
  IN EFI_PEI_PCI_CFG_PPI          *This,\r
  IN EFI_PEI_PCI_CFG_PPI_WIDTH    Width,\r
  IN UINT64                       Address,\r
  IN UINTN                        SetBits,\r
  IN UINTN                        ClearBits\r
  )\r
{\r
  EFI_PEI_PCI_CFG2_PPI  *PciCfg2;\r
\r
  PciCfg2 = (*PeiServices)->PciCfg;\r
\r
  return PciCfg2->Modify ((CONST EFI_PEI_SERVICES **)PeiServices, PciCfg2, Width, Address, &SetBits, &ClearBits);\r
}\r
Commit	Line	Data
4e17db14	1	/** @file\r
d79eed91	2	Module produce PciCfgPpi on top of PciCfgPpi2.\r
	3	\r
	4	PIWG's PI specification replaces Inte's EFI Specification 1.10.\r
	5	EFI_PEI_PCI_CFG_PPI defined in Inte's EFI Specification 1.10 is replaced by\r
	6	EFI_PEI_PCI_CFG2_PPI in PI 1.0.\r
	7	This module produces PciCfgPpi on top of PciCfgPpi2. This module is used on platform when both of\r
	8	these two conditions are true:\r
	9	1) Framework module is present that consumes PCI CFG AND\r
4e17db14	10	2) PI module is present that produces PCI CFG2 but not PCI CFG\r
d79eed91	11	\r
07567c3c	12	The Usage of this module is rare since EDK II module IntelFrameworkModulePkg\Universal\PcatSingleSegmentPciCfgPei\PcatSingleSegmentPciCfgPei.inf\r
	13	that produce PCI CFG2 can also produce PCI CFG by setting Pcd Feature Flag gEfiIntelFrameworkModulePkgTokenSpaceGuid.PcdPciCfgDisable\r
	14	to FALSE.\r
	15	\r
4259256b	16	\r
584d5652 HT	17	Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>\r
584d5652 HT	18	This program and the accompanying materials\r
4259256b	19	are licensed and made available under the terms and conditions of the BSD License\r
	20	which accompanies this distribution. The full text of the license may be found at\r
	21	http://opensource.org/licenses/bsd-license.php\r
	22	\r
	23	THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
	24	WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
	25	Module Name:\r
d79eed91	26	**/\r
4259256b	27	\r
	28	#include <PiPei.h>\r
	29	#include <Ppi/PciCfg.h>\r
	30	#include <Ppi/PciCfg2.h>\r
	31	#include <Library/DebugLib.h>\r
	32	\r
	33	//\r
	34	// Function Prototypes\r
	35	//\r
d79eed91	36	\r
	37	/**\r
	38	Reads from a given location in the PCI configuration space.\r
	39	\r
	40	@param PeiServices An indirect pointer to the PEI Services Table published by the PEI Foundation.\r
	41	\r
	42	@param This Pointer to local data for the interface.\r
	43	\r
	44	@param Width The width of the access. Enumerated in bytes.\r
	45	See EFI_PEI_PCI_CFG_PPI_WIDTH above.\r
	46	\r
	47	@param Address The physical address of the access. The format of\r
	48	the address is described by EFI_PEI_PCI_CFG_PPI_PCI_ADDRESS.\r
	49	\r
	50	@param Buffer A pointer to the buffer of data..\r
	51	\r
	52	\r
	53	@retval EFI_SUCCESS The function completed successfully.\r
	54	\r
	55	@retval EFI_DEVICE_ERROR There was a problem with the transaction.\r
	56	\r
	57	@retval EFI_DEVICE_NOT_READY The device is not capable of supporting the operation at this\r
	58	time.\r
	59	\r
	60	**/\r
4259256b	61	EFI_STATUS\r
	62	EFIAPI\r
	63	PciCfgRead (\r
	64	IN EFI_PEI_SERVICES **PeiServices,\r
	65	IN EFI_PEI_PCI_CFG_PPI *This,\r
	66	IN EFI_PEI_PCI_CFG_PPI_WIDTH Width,\r
	67	IN UINT64 Address,\r
	68	IN OUT VOID *Buffer\r
	69	);\r
	70	\r
d79eed91	71	/**\r
	72	Write to a given location in the PCI configuration space.\r
	73	\r
	74	@param PeiServices An indirect pointer to the PEI Services Table published by the PEI Foundation.\r
	75	\r
	76	@param This Pointer to local data for the interface.\r
	77	\r
	78	@param Width The width of the access. Enumerated in bytes.\r
	79	See EFI_PEI_PCI_CFG_PPI_WIDTH above.\r
	80	\r
	81	@param Address The physical address of the access. The format of\r
	82	the address is described by EFI_PEI_PCI_CFG_PPI_PCI_ADDRESS.\r
	83	\r
	84	@param Buffer A pointer to the buffer of data..\r
	85	\r
	86	\r
	87	@retval EFI_SUCCESS The function completed successfully.\r
	88	\r
	89	@retval EFI_DEVICE_ERROR There was a problem with the transaction.\r
	90	\r
	91	@retval EFI_DEVICE_NOT_READY The device is not capable of supporting the operation at this\r
	92	time.\r
	93	\r
	94	**/\r
4259256b	95	EFI_STATUS\r
	96	EFIAPI\r
	97	PciCfgWrite (\r
	98	IN EFI_PEI_SERVICES **PeiServices,\r
	99	IN EFI_PEI_PCI_CFG_PPI *This,\r
	100	IN EFI_PEI_PCI_CFG_PPI_WIDTH Width,\r
	101	IN UINT64 Address,\r
	102	IN OUT VOID *Buffer\r
	103	);\r
	104	\r
d79eed91	105	/**\r
	106	PCI read-modify-write operation.\r
	107	\r
	108	@param PeiServices An indirect pointer to the PEI Services Table\r
	109	published by the PEI Foundation.\r
	110	\r
	111	@param This Pointer to local data for the interface.\r
	112	\r
	113	@param Width The width of the access. Enumerated in bytes. Type\r
	114	EFI_PEI_PCI_CFG_PPI_WIDTH is defined in Read().\r
	115	\r
	116	@param Address The physical address of the access.\r
	117	\r
	118	@param SetBits Points to value to bitwise-OR with the read configuration value.\r
	119	The size of the value is determined by Width.\r
	120	\r
	121	@param ClearBits Points to the value to negate and bitwise-AND with the read configuration value.\r
	122	The size of the value is determined by Width.\r
	123	\r
	124	\r
	125	@retval EFI_SUCCESS The function completed successfully.\r
	126	\r
	127	@retval EFI_DEVICE_ERROR There was a problem with the transaction.\r
	128	\r
	129	@retval EFI_DEVICE_NOT_READY The device is not capable of supporting\r
	130	the operation at this time.\r
	131	\r
	132	**/\r
4259256b	133	EFI_STATUS\r
	134	EFIAPI\r
	135	PciCfgModify (\r
	136	IN EFI_PEI_SERVICES **PeiServices,\r
	137	IN EFI_PEI_PCI_CFG_PPI *This,\r
	138	IN EFI_PEI_PCI_CFG_PPI_WIDTH Width,\r
	139	IN UINT64 Address,\r
	140	IN UINTN SetBits,\r
	141	IN UINTN ClearBits\r
	142	);\r
	143	\r
	144	//\r
	145	// Module globals\r
	146	//\r
	147	EFI_PEI_PCI_CFG_PPI mPciCfgPpi = {\r
	148	PciCfgRead,\r
	149	PciCfgWrite,\r
	150	PciCfgModify,\r
	151	};\r
	152	\r
	153	EFI_PEI_PPI_DESCRIPTOR mPpiListPciCfg = {\r
	154	(EFI_PEI_PPI_DESCRIPTOR_PPI \| EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),\r
	155	&gEfiPciCfgPpiInServiceTableGuid,\r
	156	&mPciCfgPpi\r
	157	};\r
	158	\r
d79eed91	159	/**\r
	160	\r
	161	Standard PEIM entry point.\r
	162	\r
26a76fbc LG	163	@param FileHandle Handle of the file being invoked.\r
26a76fbc LG	164	@param PeiServices General purpose services available to every PEIM.\r
d79eed91	165	\r
26a76fbc	166	@retval EFI_SUCCESS The interface could be successfully installed.\r
d79eed91	167	\r
26a76fbc	168	**/\r
4259256b	169	EFI_STATUS\r
	170	EFIAPI\r
	171	PeimInitializePciCfg (\r
26a76fbc	172	IN EFI_PEI_FILE_HANDLE FileHandle,\r
4259256b	173	IN CONST EFI_PEI_SERVICES **PeiServices\r
4259256b	174	)\r
d79eed91	175	{\r
	176	//\r
	177	// Publish the PciCfgToPciCfg2 Thunk capability to other modules\r
	178	//\r
	179	return (*PeiServices)->InstallPpi (PeiServices, &mPpiListPciCfg);\r
	180	}\r
4259256b	181	\r
d79eed91	182	/**\r
d79eed91	183	Reads from a given location in the PCI configuration space.\r
4259256b	184	\r
d79eed91	185	@param PeiServices An indirect pointer to the PEI Services Table published by the PEI Foundation.\r
4259256b	186	\r
d79eed91	187	@param This Pointer to local data for the interface.\r
4259256b	188	\r
d79eed91	189	@param Width The width of the access. Enumerated in bytes.\r
d79eed91	190	See EFI_PEI_PCI_CFG_PPI_WIDTH above.\r
4259256b	191	\r
d79eed91	192	@param Address The physical address of the access. The format of\r
d79eed91	193	the address is described by EFI_PEI_PCI_CFG_PPI_PCI_ADDRESS.\r
4259256b	194	\r
d79eed91	195	@param Buffer A pointer to the buffer of data..\r
4259256b	196	\r
4259256b	197	\r
d79eed91	198	@retval EFI_SUCCESS The function completed successfully.\r
	199	\r
	200	@retval EFI_DEVICE_ERROR There was a problem with the transaction.\r
	201	\r
	202	@retval EFI_DEVICE_NOT_READY The device is not capable of supporting the operation at this\r
	203	time.\r
	204	\r
	205	**/\r
4259256b	206	EFI_STATUS\r
	207	EFIAPI\r
	208	PciCfgRead (\r
	209	IN EFI_PEI_SERVICES **PeiServices,\r
	210	IN EFI_PEI_PCI_CFG_PPI *This,\r
	211	IN EFI_PEI_PCI_CFG_PPI_WIDTH Width,\r
	212	IN UINT64 Address,\r
	213	IN OUT VOID *Buffer\r
	214	)\r
	215	{\r
	216	EFI_PEI_PCI_CFG2_PPI *PciCfg2;\r
	217	\r
	218	PciCfg2 = (*PeiServices)->PciCfg;\r
	219	\r
	220	return PciCfg2->Read ((CONST EFI_PEI_SERVICES **)PeiServices, PciCfg2, Width, Address, Buffer);\r
	221	}\r
	222	\r
d79eed91	223	\r
	224	/**\r
	225	Write to a given location in the PCI configuration space.\r
	226	\r
	227	@param PeiServices An indirect pointer to the PEI Services Table published by the PEI Foundation.\r
	228	\r
	229	@param This Pointer to local data for the interface.\r
	230	\r
	231	@param Width The width of the access. Enumerated in bytes.\r
	232	See EFI_PEI_PCI_CFG_PPI_WIDTH above.\r
	233	\r
	234	@param Address The physical address of the access. The format of\r
	235	the address is described by EFI_PEI_PCI_CFG_PPI_PCI_ADDRESS.\r
	236	\r
	237	@param Buffer A pointer to the buffer of data..\r
	238	\r
	239	\r
	240	@retval EFI_SUCCESS The function completed successfully.\r
	241	\r
	242	@retval EFI_DEVICE_ERROR There was a problem with the transaction.\r
	243	\r
	244	@retval EFI_DEVICE_NOT_READY The device is not capable of supporting the operation at this\r
	245	time.\r
	246	\r
	247	**/\r
4259256b	248	EFI_STATUS\r
	249	EFIAPI\r
	250	PciCfgWrite (\r
	251	IN EFI_PEI_SERVICES **PeiServices,\r
	252	IN EFI_PEI_PCI_CFG_PPI *This,\r
	253	IN EFI_PEI_PCI_CFG_PPI_WIDTH Width,\r
	254	IN UINT64 Address,\r
	255	IN OUT VOID *Buffer\r
	256	)\r
	257	{\r
	258	EFI_PEI_PCI_CFG2_PPI *PciCfg2;\r
	259	\r
	260	PciCfg2 = (*PeiServices)->PciCfg;\r
	261	\r
	262	return PciCfg2->Write ((CONST EFI_PEI_SERVICES **)PeiServices, PciCfg2, Width, Address, Buffer);\r
	263	}\r
	264	\r
d79eed91	265	/**\r
	266	PCI read-modify-write operation.\r
	267	\r
	268	@param PeiServices An indirect pointer to the PEI Services Table\r
	269	published by the PEI Foundation.\r
	270	\r
	271	@param This Pointer to local data for the interface.\r
	272	\r
	273	@param Width The width of the access. Enumerated in bytes. Type\r
	274	EFI_PEI_PCI_CFG_PPI_WIDTH is defined in Read().\r
	275	\r
	276	@param Address The physical address of the access.\r
	277	\r
	278	@param SetBits Points to value to bitwise-OR with the read configuration value.\r
	279	The size of the value is determined by Width.\r
	280	\r
	281	@param ClearBits Points to the value to negate and bitwise-AND with the read configuration value.\r
	282	The size of the value is determined by Width.\r
	283	\r
	284	\r
	285	@retval EFI_SUCCESS The function completed successfully.\r
	286	\r
	287	@retval EFI_DEVICE_ERROR There was a problem with the transaction.\r
	288	\r
	289	@retval EFI_DEVICE_NOT_READY The device is not capable of supporting\r
	290	the operation at this time.\r
	291	\r
	292	**/\r
4259256b	293	EFI_STATUS\r
	294	EFIAPI\r
	295	PciCfgModify (\r
	296	IN EFI_PEI_SERVICES **PeiServices,\r
	297	IN EFI_PEI_PCI_CFG_PPI *This,\r
	298	IN EFI_PEI_PCI_CFG_PPI_WIDTH Width,\r
	299	IN UINT64 Address,\r
	300	IN UINTN SetBits,\r
	301	IN UINTN ClearBits\r
	302	)\r
	303	{\r
	304	EFI_PEI_PCI_CFG2_PPI *PciCfg2;\r
	305	\r
	306	PciCfg2 = (*PeiServices)->PciCfg;\r
	307	\r
	308	return PciCfg2->Modify ((CONST EFI_PEI_SERVICES **)PeiServices, PciCfg2, Width, Address, &SetBits, &ClearBits);\r
	309	}\r